Precision Test pressure (calibration) gauges
What we offer?
Budenberg offers high quality and high stability Pressure Calibration gauges in three dial sizes with three accuracy options 0.25%, 0.2% and 0.15% of fsd. Digital test gauges are available up to 0.05% accuracy.
All Standard and Master Test gauges are supplied with detailed calibration certificate.
Budenberg Precision ( Standard / Master / Super ) Test Gauges are undoubtedly recognized as a world leader for its accuracy, reliability and of course, Budenberg quality.
Application
Budenberg Calibration Test Gauges can be used for a number of applications including:
- Calibration of pressure gauges, switches, transducers and transmitters.
- Calibration of pneumatic controllers, transmitters, valves etc.
- Measurement of pressure on test beds (aero-engines, fuel systems for gas turbines, diesel engine injection systems, hydraulic rigs, fuelling systems etc.)
- Hydraulic tests of pipework or pressure vessels (in factory or on site)
- Setting of relief valves
- Measurement of pore water pressure in soil mechanics laboratories.
- Efficiency testing of steam turbines and compressors on pipelines etc.
Oil Free Test Gauge Option
Oil-free Test Gauges are available, the tube and blocks are vaporized and de-greased before assembly and the strictest precautions are taken to see that no oil enters the tube during manufacturing. Such gauges are dial marked “Use No Oil”.
Common Specifications
Budenberg Test Gauges offers high reliability, Quality and stability. These gauges incorporate high accuracy with up to a maximum of 500 graduations where possible, along with a knife-edged pointer and an anti-parallax mirror to help reduce chance of human error. The Standard Test Gauge is an obvious choice where accuracy is paramount.
The gauge is also dust and splash proof to IP54 standards. Recalibration is simplified with the inclusion of a standard micrometer adjustable pointer as standard.
Calibration
The Standard Test Gauge meets the full requirements of EN837 and all units are supplied with a detailed (point-by-point) calibration certificate traceable to National Standards. All units are individually calibrated to suit the test medium being used i.e. Gas or Liquid. It is important therefore to specify the medium at the time of order.
Pressure Medium
If a gauge is calibrated on air and subsequently used on liquid, the weight of the liquid in the tube will weigh down the end of the tube and can cause an accuracy error. This effect is significant with graduations up to and including 16 bar (250 lb/in²) and so we must be advised on any order whether the gauges are to be used on liquid or air; the dials of the gauge will be marked accordingly.
Gauges with vacuum scale or with compound scale (pressure and vacuum) are calibrated on air. Gauges with graduations above 16 bar (250 lb/in²) are usually calibrated on oil. Gauges graduated above 16 bar and not exceeding 40 bar (250 and 600 lb/in²) can be tested on air at customers’ request.
Mounting
Direct, Surface Mounting; Flush Panel Mounting with clamp or three hole fixing.
Case
LM6M Aluminium casting to BS1490 utilising a full Safety Pattern solid baffle wall with blow out back, finish to BS381C.
Pointer
Micrometer Adjustable, Knife-edge, Stainless Steel coloured Black.
Window
Laminated Safety Glass.
Pressure Element
Up to 70 Bar Beryllium Copper bourdon tube & Brass Chrome plated
From 71 Bar up to 600 bar Beryllium Copper coil tube & Brass Chrome plated connection
From 601 Bar up to 2500 bar Ni-Span C Coil & Stainless Steel connection
Option for Stainless Steel on request
Pressure Connection
1/2” BSP or NPT up to 1400 bar
3/8” BSP or 1/2” NPT as Standard on Flush Mounting Units
G1/2A, HF4, HF2 or MP connections above 1400 bar
Other connections are available
Accessory
Professional, purpose Weather proof padded Aluminium Carry Case for 150mm, 200mm & 250mm size gauges are available, if ordered.
Scale Division / Least Count
The calculation is given below in the tabular form.
How to Calculate Scale Division or least count
STEP 1 – Select Value in the Range Row against the Column A to I which should be a multiplication factor of 1 , 10, 100, 1000 of required Range.
STEP 2 – Multiply the Range value by 1 or 10 or 100 or 1000 to arrive at the required range.
STEP 3 – Choose Dial Size and its Dial Divisions under the earlier selected Column.
STEP 4 – Divide Range by No. of Dial Divisions.
STEP 5 – The Value found is scale division or least count.
The above ranges are standard. For non-standard ranges please consult us.
Description
This gauge incorporates a base test gauge accuracy with up to a maximum of 500 graduations where possible, along with a knife-edged pointer and an anti-parallax mirror to help reduce chance of human error. The Standard Test Gauge is an obvious choice where accuracy is paramount.
The 5214 is available in 150mm, 200mm and 250mm dial sizes and provides 0.25% accuracy of Full Scale Deflection as defined in EN837-1.
This gauge is supplied in dual range scale (if ordered).
Accuracy
0.25% of fsd on rising and falling pressures up to 1600 bar.
0.25% of fsd on rising pressures only above 1600 bar.
Certification
All units are supplied with a detailed calibration certificate traceable to National Standards.
For dual range Gauges, the calibration certificate is supplied as standard on primary scale. The calibration certificate on secondary scale is supplied if ordered separately.
Pointer
Re-calibration is simplified by inclusion of a micrometer adjustable pointer.
Housing
The Gauge, housed in a new die cast safety pattern case, meets the full requirements of EN837.
Description
Budenberg Master Test Gauges are generally recognised as a world leader for its accuracy, repeatability and quality and are used by many Calibration Laboratories and workshops worldwide.
The 5314 is available in 250mm dial size and provides 0.20% accuracy of Full Scale Deflection as defined in EN837-I.
This gauge is supplied in dual range scale (if ordered).
Accuracy
0.2% of fsd on rising and falling pressures up to 1600 bar.
0.2% of fsd on rising pressures only above 1600 bar.
Certification
All units are supplied with a detailed calibration certificate traceable to National Standards.
For dual range Gauges, the calibration certificate is supplied as standard on primary scale. The calibration certificate on secondary scale is supplied if ordered separately.
Pointer
Re-calibration is simplified by inclusion of a micrometer adjustable pointer.
Housing
The Gauge, housed in a new die cast safety pattern case, meets the full requirements of EN837.
Description
Budenberg Super Test Gauges are first choice for Calibration Laboratories and workshops worldwide. The Gauge provides 0.15% accuracy of Full Scale Deflection as defined in EN837-I.
The 5414 available in 250mm dial size now provides a higher specification and incorporates many additional features as standard.
This gauge is supplied in dual range scale (if ordered).
Accuracy
0.15% of fsd on rising and falling pressures.
Certification
All units are supplied with a detailed calibration certificate traceable to National Standards.
For dual range Gauges, the calibration certificate is supplied as standard on primary scale. The calibration certificate on secondary scale is supplied if ordered separately.
Pointer
Re-calibration is simplified by inclusion of a micrometer adjustable pointer.
Housing
Housed in a new die cast safety pattern case, the 5414 meets the full requirements of EN837 including a brighter anti-parallax mirror scale & knife edge pointer for accurate repeatable readings.
Application
Digital Test Gauges can be used for a number of applications including:
- Calibration of pressure gauges, switches, transducers and transmitters.
- Pressure Comparators for pressure calibration in the laboratory.
- Portable pressure test pumps and Hand held pumps for pressure calibration in the field.
Description
Budenberg offer a range of Digital Test Gauges suitable for calibration or applications where high accuracy is essential. Providing up to 0.05% Accuracy of FS @23°C including Linearity and Hysteresis which is fully temperature compensated across the range of -10°C to 70°C thereby allowing accurate readings to be taken over a wide range of ambient conditions.
The all new BG200 Digital Gauge from Budenberg is designed to offer a truly simple, cost effective digital gauge to cover a wide range of applications from calibration laboratory to in-field use. With IP65 protection and 300% FS burst pressure make this gauge one of the safest gauge for calibration and in-field use.
The gauge is supplied with optional RS232 and WinTest1 Software (if ordered).
Pressure Medium
The gauges are calibrated on liquid or air so we must be advised on any order whether the gauges are to be used on liquid or air.
Gauges with vacuum scale or with compound scale (pressure and vacuum) are calibrated on air. Gauges with graduations above 20 Bar (300 lb/in²) are usually calibrated on oil. Gauges graduated above 20bar and not exceeding 40bar (300 and 600 lb/in²) can be tested on air at customers’ request.
Calibration
The Digital Test Gauge meets the full requirements of EN837. All units are individually calibrated to suit the test medium being used i.e. Gas or Liquid. It is important therefore to specify medium at time of order.
Certification
All units are supplied with a detailed calibration certificate traceable to National Standards on one unit.
The Gauge is supplied with UKAS Calibration certificate, if ordered.
Display
Graphic display, custom LCD display, 16 mm height
Accuracy
±0.05% of span from -1 to 1000 bar @ 23°C and ±0.1% of span from 1000 to 3000 bar @ 23°C
Accuracy includes Linearity and Hysteresis which is temperature compensated from -10°C to 70°C thereby allowing accurate readings to be taken over a wide range of ambient conditions.
Units
9 user selectable units – mbar, bar, kPa, MPa, kg/cm², psi, mHg, mH2O and mmH2O.
Power
The long life internal 2X AA size Alkaline battery with autopower off function in order to preserve the battery life.
A wide range of hand held pressure pump and kits are available to offer a complete testing solution for maintenance or calibration routine. Suitable Hand Pumps are described in “Hand Pumps & Kits” under Pressure Comparators.
